An interesting piece on Bloomberg discussing the economics associated with changing roles. Much of it doesn't relate to executive search but one interesting fact - apparently 27% of offers to the employed are unsolicited..... Direct search, in other words.

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In addition, employers are poaching workers, as 27 percent of offers to the employed are unsolicited, according to Faberman, as well as co-authors Aysegul Sahin and Giorgio Topa of the New York Fed, and Andreas Mueller of Columbia University.